ZipCheckup grade for 58503: C.
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Bismarck, ND (58503): High Radon Potential Area - 67/100
EPA data combined for 2 water systems mapped to this ZIP (largest mapped system: City of Bismarck)
EPA records for the water systems mapped to 58503 in Bismarck, ND contain zero recorded violations for inclusive record years 2021 through 2026. This does not establish that every category was monitored or published, and it does not cover events outside that source window.
Data source: U.S. Environmental Protection Agency (EPA) SDWIS
At a Glance
- Water No drinking-water violations in EPA records since 2021.
- Lead The reported 90th-percentile lead result of 0.0028 mg/L is below the EPA action level for water systems; EPA's health goal for lead is zero.
- PFAS PFAS detected in UCMR5 sampling; see the PFAS section for each compound, compared with the federal PFAS MCL where one exists.
- Radon EPA Zone 1 - highest county-level potential. This is not a home measurement; test before any threshold comparison.
- Flood 170 cumulative NFIP claim records. This historical count is not a current property-risk verdict.
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This report sorts findings for 58503 in Bismarck into two severity tiers using its own criteria: lead above the EPA action level, unresolved violations on record or a PFAS result above the level of an EPA PFAS maximum contaminant level (enforced from 2029) for the critical tier, and a PFAS detection or elevated carbon monoxide risk for the high-priority tier. In the available data, the high-priority tier holds 1 and the critical tier hold none; each card below describes one finding.
Score Breakdown
Overall Home Safety Score: 67/100
This is the published model score. Component and domain values are shown independently; they are not added together on this page.
Canonical components
Required domains
Coverage: 4 of 4 components and 3 of 3 domains observed.
Model 4.0.0; series home-safety-v4-cross-vertical.
Safety & Health (8) HIGH
Your Water System
ZIP code 58503 in Bismarck, North Dakota is mapped to the water system City of Bismarck (EPA ID: ND0800080). This system provides water to approximately 72,417 people from surface water sources.
There are 2 community water systems serving this area.
Water Systems Serving This Area
| System Name | EPA ID | Population | Source |
|---|---|---|---|
| City of Bismarck | ND0800080 | 72,417 | Surface water |
| South Central Regional Water District | ND0801154 | 3,700 | Surface water |
Other Water Quality Reports in North Dakota
- 58001 (Abercrombie)
- 58002 (Absaraka)
- 58004 (Amenia)
- 58005 (Argusville)
- 58006 (Arthur)
- 58007 (Ayr)
- 58008 (Barney)
- 58009 (Blanchard)
- 58011 (Buffalo)
- 58012 (Casselton)
- 58013 (Cayuga)
- 58015 (Christine)
- 58016 (Clifford)
- 58017 (Cogswell) - 1 violation recorded for mapped water systems
- 58018 (Colfax)
- 58021 (Davenport)
- 58027 (Enderlin) - 1 violation recorded for mapped water systems
- 58029 (Erie)
- 58030 (Fairmount)
- 58031 (Fingal)
Nearby Water Quality Reports
- 58505 (Bismarck) - 2 mi
- 58501 (Bismarck) - 2 mi
- 58506 (Bismarck) - 2 mi
- 58507 (Bismarck) - 2 mi
- 58502 (Bismarck) - 6 mi
- 58554 (Mandan) - 6 mi
- 58521 (Baldwin) - 8 mi
- 58504 (Bismarck) - 9 mi
- 58558 (Menoken) - 12 mi
- 58566 (Saint Anthony) - 18 mi
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for City of Bismarck (ND0800080) on EPA.gov.
4 of the top compounds applied across the surrounding county in USGS pesticide-use estimates appear on EPA drinking-water monitoring lists. See the agricultural pesticide-use section.
PFAS Contamination Detected
PFAS ("forever chemicals") have been reported in samples from water systems associated with ZIP code 58503.
Detected compounds: PFBA.
Highest measured level: 0.0059 µg/L
Reverse osmosis (RO) and activated carbon block filters can reduce PFAS at the tap. Certifications list the compounds covered: an NSF/ANSI 53 or 58 claim for PFOA/PFOS does not cover every PFAS, so check that the product lists the compounds detected here.
Environmental Hazards (11) MODERATE
Home & Infrastructure (6) OK
Cost & Community (9) MODERATE
CPSC product recall notices
These national notices are not matched to this ZIP code or water system.
Protect Your Home in Bismarck
Based on local data for ZIP 58503, these services may benefit homeowners in your area.
Based on local data for your area. Use the tools below to explore your options.
Home & Flood Insurance
The ZIP code for this report in Bismarck has 170 FEMA flood claims on record. Standard homeowner policies don't cover flood damage - make sure you're protected.
Typical cost: Flood insurance: premiums vary by property and flood zone; request a quote
Check Your Flood Zone (Free)FEMA flood map lookup - see if your property is in a flood zone
Free tip: Check your FEMA flood zone at msc.fema.gov (free lookup)
Service recommendations are based on public data for this ZIP code (FEMA, Census ACS, NWS). Actual needs vary by property. By calling, your information will be shared with an independent service provider. ZipCheckup may receive compensation. Cost estimates are approximate and vary by property, condition, and contractor.
Frequently Asked Questions
Is the tap water in 58503 safe to drink?
EPA SDWIS records 0 violations since 2021 across the water systems mapped to ZIP 58503 (primary system: City of Bismarck), including 0 health-based. The violation table above shows which system each record belongs to. ZipCheckup last updated this page in July 2026. The federal source release date is unavailable, so that month is not presented as source currency.
Where does 58503's water come from?
The recorded water source for City of Bismarck, a system mapped to ZIP code 58503, is Surface water. This system serves approximately 72,417 people.
How does Bismarck water compare to the national average?
Bismarck's Home Safety Score ranks lower than 65% of U.S. ZIP codes, and lower than 73% of ZIP codes within North Dakota.
How can I get my water tested in Bismarck?
If City of Bismarck supplies your home, contact it for its Consumer Confidence Report; otherwise contact the water utility that serves your address, or hire a certified lab for independent home water testing. The EPA recommends annual testing if you use a private well.
Is lead a concern in 58503 tap water?
The Lead and Copper Rule record selected for 58503 reports a 90th-percentile lead result of 0.0028 mg/L for a water system mapped to this ZIP (record date 2024-12-31). The EPA action level is 0.015 mg/L. This result is below the EPA action level; it does not show the lead level in each home.
What is the radon risk for 58503?
58503 is mapped to a county in EPA Radon Zone 1 (high county-level radon potential; EPA recommends testing every home), located in Burleigh County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.
Are there PFAS (forever chemicals) in 58503's water?
Yes, PFAS have been detected in samples from water systems mapped to 58503. Reverse osmosis and activated carbon filters certified to NSF/ANSI 53 or 58 specifically for PFOA/PFOS reduction can reduce PFAS.
What does the NFIP claim history show for ZIP 58503?
FEMA records contain 170 flood insurance claims filed in ZIP code 58503; the recorded rated-zone value (the most frequent one if there are several claims) is AE, which is claims evidence and may differ from the current FEMA map zone for a property. This is a substantial claim history, but claim count is not a count of distinct events or properties. Review FEMA's map for the specific property.
How to cite this page
ZipCheckup. (2026). Bismarck, ND (58503): High Radon Potential Area - 67/100. https://zipcheckup.com/report/58503/
@misc{zipcheckup-report-58503,
author = {{ZipCheckup}},
title = {{Bismarck, ND (58503): High Radon Potential Area - 67/100}},
year = {2026},
url = {https://zipcheckup.com/report/58503/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 58503
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 58505 | Bismarck, ND | 1.6 mi | N/A | 0 |
| 58501 | Bismarck, ND | 2.1 mi | C | 0 |
| 58506 | Bismarck, ND | 2.1 mi | N/A | 0 |
| 58507 | Bismarck, ND | 2.1 mi | N/A | 0 |
| 58502 | Bismarck, ND | 5.9 mi | N/A | 0 |
| 58554 | Mandan, ND | 5.9 mi | N/A | 0 |
| 58521 | Baldwin, ND | 8.0 mi | C | 0 |
| 58504 | Bismarck, ND | 9.5 mi | C | 0 |
| 58558 | Menoken, ND | 12.0 mi | N/A | 0 |
| 58566 | Saint Anthony, ND | 18.1 mi | N/A | 0 |
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